Agence France-Presse: A biofuels backlash has erupted in major ethanol producer the United States, as lawmakers and experts debate the merits of converting food to fuel to support America’s age-old love affair with the automobile. With gasoline at record prices at US pumps, and soaring corn, rice and wheat costs sparking a global food crisis this year with deadly riots in several nations, some have questioned the wisdom of President George W. Bush’s call for higher US biofuel mandates that divert US …